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This article mainly explains "what is java dependency inversion principle". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian and go deep into it slowly to study and learn "what is java dependency inversion principle" together!

Dependency Inversion Principle (DIP)

defined

High-level modules should not depend on low-level modules, both should depend on abstractions.

Abstraction does not depend on specific details.

Details should depend on abstractions.

Abstraction refers to an interface or abstract class, and detail refers to a concrete implementation class that implements an interface or abstract class.

That is to say, dependencies between modules occur through interfaces or abstractions. Two implementation details cannot directly depend on each other. Interfaces cannot depend on implementation. Implementation should depend on abstractions.

When we are developing distributed systems, such as the commonly used dubbo framework, the connection of each system occurs through the interface, as long as it depends on each other's interface, and does not need to know each other's implementation, it is impossible to rely on each other's implementation class. In actual development, as long as the other modules define the interface well, first develop according to the parameters provided by the interface, and then jointly debug the real implementation class. The other two are easier to understand, and dependencies can only depend on their abstractions, not their concrete implementation classes.

Therefore, the biggest feature of using the dependency inversion principle is to reduce the coupling between classes, to support the parallel development of each module without affecting each other, and to improve the readability, maintainability and extensibility of the system.

Thank you for reading, the above is "java dependency inversion principle is what" the content, after the study of this article, I believe we have a deeper understanding of java dependency inversion principle is what this problem, the specific use of the situation also needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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